In 1988, the Los Angeles Kings would pull off one of the most consequential trades in NHL history with the Edmonton Oilers. The trade would involve the greatest hockey player in Wayne Gretzky and had such a resounding impact that ESPN would make a '30 for 30' documentary on it titled 'Kings Ransom'.
It was one of the most unexpected trades ever to occur because if there was one player who was untradeable, it would be Wayne Gretzky. He was just coming off his fourth Stanley Cup in five seasons with the Edmonton Oilers and had won the Hart Memorial Trophy eight times already in his career.